Step 31
The connectors at the ends of the cables are attached very firmly to the sockets on the logic board. Pulling directly on the cable will either separate the cable from its connector or the socket from the logic board.
Lift the upper case enough to disconnect the blue and white power cable from the logic board. Using your fingernails or a dental pick, carefully pry the connector from its socket. Make sure you're pulling only on the connector and not on the socket.
Step 32
Carefully disconnect the multicolored speaker cable from the logic board. As before, make sure you're pulling only on the connector and not on the socket.
Step 33 — Top Shield
The screw circled in orange may not be present in some models.
Remove the following 16 screws:
Thirteen 3 mm Phillips.
One 3 mm Phillips. (actual screw not present in image)
Two 4 mm Phillips.
Be sure to fit the screw near the left hinge through the loop in the display data cable, securing the cable to the upper case.